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Andy Stein
April 9, 2026

50 Common Infections (and Their Treatment)

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Three doctors having a conversation in a hospital corridor, wearing their medical scrubs. They discuss patient care, reflecting their dedication and expertise. The scene exudes professionalism and trust in their collaborative approach to medicine in a hospital in Newcastle, England.
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50 common infections (and their treatment)

# Infection Cause Risk Factors Treatment
1 Amoebiasis Entamoeba histolytica Contaminated food/water Antiparasitic drugs
2 Appendicitis Bacterial infection Age 10–30, family history Surgery + antibiotics
3 Athlete’s Foot Fungal infection Sweaty feet, communal showers Topical/oral antifungals
4 Bacterial Vaginosis Imbalance of bacteria Multiple partners, douching Antibiotics
5 Bronchitis Viruses or bacteria Smoking, pollution Supportive care
6 Campylobacter Campylobacter bacteria Undercooked poultry Hydration, antibiotics
7 Cellulitis Bacterial skin infection Skin breaks, diabetes Oral/IV antibiotics
8 Chlamydia Chlamydia trachomatis Unprotected sex Antibiotics
9 C. difficile C. diff bacteria Antibiotic use, hospital Targeted antibiotics
10 Common Cold Rhinoviruses Close contact Symptom relief
11 Conjunctivitis Viruses or bacteria Poor hygiene Depends on cause
12 COVID-19 SARS-CoV-2 virus Age, chronic illness Supportive, antivirals
13 Croup Viral infection Young children Steroids, humid air
14 Dengue Fever Dengue virus Tropical areas Supportive care
15 Ear Infection Bacteria or viruses Children, colds Pain relief
16 Ebola Virus Ebola virus Contact with fluids Supportive care
17 Endocarditis Bacterial infection Heart valve disease IV antibiotics
18 Epiglottitis Bacterial infection Lack of vaccination Airway management
19 Food Poisoning Bacteria/Viruses/Toxins Improper handling Hydration
20 Gastroenteritis Viruses or bacteria Crowded settings Hydration, rest
21 Genital Herpes Herpes simplex virus Unprotected sex Antivirals
22 Giardiasis Giardia parasite Contaminated water Antiparasitic drugs
23 Gonorrhea Neisseria gonorrhoeae Unprotected sex Antibiotics
24 Hand, Foot, & Mouth Enteroviruses Young children Supportive care
25 Hepatitis A Hepatitis A virus Food, travel Supportive care
26 Hepatitis B Hepatitis B virus Blood/sexual exposure Antivirals (chronic)
27 Hepatitis C Hepatitis C virus IV drug use Antiviral therapy
28 HIV Immunodeficiency virus Unprotected sex Antiretrovirals
29 Impetigo Staph or Strep Children, skin breaks Antibiotics
30 Influenza Influenza viruses Winter, chronic illness Support, antivirals
31 Legionnaires’ Legionella bacteria Smoking, water systems Antibiotics
32 Lyme Disease Borrelia (ticks) Outdoor exposure Antibiotics
33 Malaria Plasmodium (mosquitoes) Endemic travel Antimalarial drugs
34 Measles Measles virus Unvaccinated Supportive care
35 Meningitis Viral or bacterial Close living quarters Antibiotics/Support
36 Mononucleosis Epstein–Barr virus Teens, saliva Rest, support
37 MRSA Infection Resistant Staph Healthcare exposure Specific antibiotics
38 Norovirus Norovirus Crowded settings Hydration, rest
39 Pelvic Inflammatory Ascending STDs Untreated STDs Broad antibiotics
40 Pneumonia Bacteria/Viruses/Fungi Age, chronic illness Depends on cause
41 Rabies Rabies virus Animal bites PEP Vaccination
42 Ringworm Fungi Skin contact Antifungals
43 Salmonella Salmonella bacteria Undercooked food Hydration
44 Scabies Sarcoptes mites Close contact Scabicidal meds
45 Sepsis Systemic response Severe illness IV meds, hospital
46 Shingles Varicella-zoster Older age Antivirals
47 Sinusitis Viral or bacterial Allergies, colds Support/Antibiotics
48 Strep Throat Streptococcus pyogenes Close contact Antibiotics
49 Tuberculosis Mycobacterium Crowded conditions Long-term meds
50 UTI Bacteria (E. coli) Female anatomy Antibiotics

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